Waste Water Engineering 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is 300 mg/l 400 mg/l 200 mg/l 100 mg/l 300 mg/l 400 mg/l 200 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The design period in years for pumping plants, is 5 to 10 2 to 3 1 3 to 5 5 to 10 2 to 3 1 3 to 5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The factor responsible for purification of sewage in river is Temperature Hydrology All listed here Dissolved oxygen in water Temperature Hydrology All listed here Dissolved oxygen in water ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The normal value of over flow rates for plain primary sedimentation tanks, ranges between 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is 1.76 m 0.88 m 1.36 m 0.68 m 1.76 m 0.88 m 1.36 m 0.68 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering depends upon The Chezy’s constant C in the formula V = C Roughness of sewer surface All listed here Shape of the sewer Size of the sewer Roughness of sewer surface All listed here Shape of the sewer Size of the sewer ANSWER DOWNLOAD EXAMIANS APP
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